Electric pull-socket



W. A. BEHRENS.

ELECTRIC PULL SOCKET.

APPLICATION FILED SEFT- 6. I919.

1,357,939, Patentd Nov. 9, 1920.-

v auoewlioi 71. 1% 196777? 5 uuirsusrares PATENT name.

WALTER A. BEI-IRENS, 0F BROOKLYN, NEW YORK, ASSIGNOR TO W. R. OSTRANDER & COMPANY, OF NEW YORK, N. Y., A. CORPORATION OF NEW YORK.

ELECTRIC PULL-sooner.

Application filed September 6, 1919.

To all whom it may concern:

Be it known that I, WVALTER A. BEHRENS, a citizen of the United States of America, residing at Brooklyn, New York, have invented new and useful Electric Pull- Sockets, of which the following is a specification.

My invention relates particularly to lever switch mechanism and is especially intended for use in what are commonly termed pull sockets.

In such constructions it has been customary to rotate the switch member step by step by an oscillating lever with a ratchet connection, the lever being kept under tension by a helical spring, one end of which is connected to a stationary abutment and the other end to the lever. It has been customary to bend the ends of this spring so as to make secure connections with the abutment and the lever respectively. The main object oi my invention is to simplify and cheapen the construction and primarily to eliminate the bent ends of the spring and thus cheapen its construction.

In the preferred form of the construction therefore, the ends of the spring are tanential to the terminal coils of the spring.

The oscillating lever is provided with a tongue for securing one end of the spring and the abutment is in the form of a flanged plate or disk with notches in the flange adapted to receive the adjacent end of the spring. Preferably, this disk is provided with an open slot to receive\ grooved portions of the spindle.

Figure 1 is a side View of parts of a switch embodying the improvements of my invention.

Fig. 2 is a plan view showing the spring and connected parts.

Fig. 3 is a perspective view of the principal parts of the device to which my invention relates.

The base 5 usually carries one or more relatively stationary contacts. The spindle 6 supports the rotary contact carrier 7 and the ratchet lever 8. he spring 9 surrounds the spindle between the abutment disk 10 and the lever 8. This disk is provided with Specification of Letters Patent.

Patented Nov. 9, 1920.

Serial No. 322,084.

an open slot 11 the walls of which are adapted to engage in the grooves 12 of the spindle.

In the form shown, the spring is smaller in diameter at its upper end than at its base, but it should be understood that this invention is not limited to this spiral construction but is applicable to any spring of the heli cal type. The ends 13 and 14 of the spring extend tangentially from the upper and lower coils of the spring without any bend so that it is possible to make the spring on an automatic machine at low cost. The disk 10 is provided with a notched flange l5 preferably with. grooves 16 adapted to receive the end 13 of the spring. The ratchet lever is provided with a tongue or finger 17 adapted to clamp the other end 14c of the spring in place.

The ratchet lever may be operated in any suitable manner, for instance, by means of a cord or chain. Of course suitable abutments may be provided for the ratchet lever as is common in this art. It will be seen that the tension of the spring may be readily adjusted to the desired degree by simply pushin the end 13 downward from engagement with the notched flange of the disk 10 and reengaging the end 13 with another notch so as to increase or decrease the tension.

I claim:

1. In an electric switch, an insulating base, a spindle carried thereby and having a groove near one end, an abutment member having a slot open at one edge and seated in said groove, an oscillatory ratchet lever on said spindle, a rotary contact carrier on said spindle adapted to be operated by said ratchet lever in one direction, said ratchet lever having a finger projecting toward said abutment member and said abutment member having a portion projecting toward said ratchet lever, and a spring surrounding said spindle and having its end coils pressing against said abutment member and against said ratchet lever, the ends of the end coils extending substantially tangentially therefrom and engaging, respectively, the projecting portion of said abutment and the finger of said ratchet lever.

2. In an electric switch, a base, a spindle jecting toward said ratchet lever, and a 10 carried thereby, a rotary contact carrier helical spring mounted on said spindle bemounted on said spindle in cooperative retween said abutment member and said lation to said base, an oscillatable ratchet ratchet lever and having substantially lever mounted. on said spindle and co-acting straight end portions engaging the notched With said carrier and having a hooked portion of said abutment member and the 15 finger projecting away from said carrier, an hooked finger of said. ratchet lever, respecabutment member secured on the end of said tively.

spindle and having a notched portion pro- WALTER A. BEHRENS. 

